Medicinal liquid injection port and medicinal liquid injection device

Abstract

There is provided a medicinal liquid injection port to be implanted subcutaneously. A housing main body is provided with a medicinal liquid storage portion therein, an opening portion that opens the medicinal liquid storage portion, and a discharge hole that communicates with the medicinal liquid storage portion and configured to be connected with a tube. A septum attached to the opening portion of the housing main body and provided with a puncturable region that can be punctured with a puncture needle. A contrast portion is disposed in the septum over a thickness direction of the septum so as to detect the puncturable region of the septum with the ultrasonic wave. The contrast portion is provided in the septum within a thickness region of the septum and all of the contrast portion is positioned at an inner side of the septum in the thickness direction of the septum.

Description

CROSS REFERENCE TO PRIOR APPLICATION[0001]This application is a National Stage Patent Application of PCT International Patent Application No. PCT / JP2018 / 020195 (filed on May 25, 2018) under 35 U.S.C. § 371, which claims priority to Japanese Patent Application No. 2017-108351 (filed on May 31, 2017), which are all hereby incorporated by reference in their entirety.TECHNICAL FIELD[0002]The present invention relates to a medicinal liquid injection port configured to be implanted subcutaneously, into which medicinal liquid can be injected by puncturing with a puncture needle from the outside and a medicinal liquid injection device.BACKGROUND ART[0003]Conventionally, a medicinal liquid injection port is implanted subcutaneously as an instrument for efficiently injecting medicinal liquid such as an anti-cancer agent. In general, the medicinal liquid injection port includes a liquid reservoir portion therein, and an opening thereof is closed by a septum made of an elastic material. The med...

AI Technical Summary

Benefits of technology

[0011]According to the present invention, since the contrast portion is disposed in the housing main body and / or the septum over the thickness direction of the septum so as to detect the puncturable region of the septum, when the medicinal liquid injection port is irradiated with the ultrasonic wave, an echo image of the contrast portion is contrasted over the thickness direction of the septum so as to easily grasp a position of the puncturable region of the septum, so that the puncturable region of the septum can be appropriately punctured with the puncture needle.

Problems solved by technology

However, since the septum of the medicinal liquid injection port cannot be visually recognized from outside the body, it is difficult to appropriately puncture the septum of the medicinal liquid injection port with the puncture needle.

If the medicinal liquid is injected in a state in which the puncture needle has not been inserted into the septum, the medicinal liquid leaked out of the port causes inflammation in a tissue and necrosis of the tissue.

In addition, although the medicinal liquid injection port should be implanted with the septum facing toward skin, in a case in which the medicinal liquid injection port is inverted and the liquid reservoir portion is positioned close to the skin, it is difficult to puncture the septum with the puncture needle.

However, in this case, since the position of the septum can be grasped only in a dedicated diagnostic room having a CT facility, it is inconvenient.

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